Finding the Fourth Proportional to 139,796.31, 192,924.37 and 79,372.58

Step by Step Solution

1. Step 1: Write the proportion equation
   139,796.31 : 192,924.37 = 79,372.58 : x
2. Step 2: Convert to fraction form
   139,796.31/192,924.37 = 79,372.58/x
3. Step 3: Cross multiply
   139,796.31x = 192,924.37 × 79,372.58
4. Step 4: Simplify right side
   139,796.31x = 15,312,904,991.77
5. Step 5: Solve for x
   x = 15,312,904,991.77/139,796.31
6. Step 6: Final answer
   x = 109,537.26